>They're the least generous with open-source.

Yes I'm surprised most of the "anthropic stans" don't realize this.

It's not like OpenAI is a particular fan of open-source models either, but the way I see it to OpenAI it's a purely calculated pragmatic business decision. They won't release weights for any good models since it'd impact revenue, and they view other open models as competition. But otherwise they're not ideological about it. If there was some really good reason to, they would (and they have, gpt-oss probably as a fig leaf). Sure some of the characterizations of "sama" aren't particularly flattering, but at the same time I think the common thread that he views everything as "just ruthless business" is ultimately beneficial, since rational and pragmatic can be modeled and understood.

Anthropic's founding philosophy is built on the premise that only they should control AI because of its danger, only they can be the right stewards, and that open-source models are an existential risk. Oh and the fact that it's Chinese open-source models rather than western models that are "winning" must be keeping them up at night.